diff --git a/specification/sql/resource-manager/Microsoft.Sql/preview/2015-05-01-preview/managedInstances.json b/specification/sql/resource-manager/Microsoft.Sql/preview/2015-05-01-preview/managedInstances.json
index 6af4102fcf51..8cb037fdc9f9 100644
--- a/specification/sql/resource-manager/Microsoft.Sql/preview/2015-05-01-preview/managedInstances.json
+++ b/specification/sql/resource-manager/Microsoft.Sql/preview/2015-05-01-preview/managedInstances.json
@@ -371,6 +371,14 @@
           "x-ms-mutability": [
             "create"
           ]
+        },
+        "publicDataEndpointEnabled": {
+          "description": "Whether or not the public data endpoint is enabled.",
+          "type": "boolean"
+        },
+        "proxyOverride": {
+          "description": "Proxy override of the managed instance.",
+          "type": "string"
         }
       }
     },